Discussion
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- Question
During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) __________ with increase in the amount of water.
Options- A. decreases
- B. increases
- C. remains unchanged
- D. decreases linearly
- Correct Answer
- increases
- 1. Deoiling of wax is done by its
Options- A. heating
- B. cooling
- C. solvent extraction
- D. both(b)&(c) Discuss
- 2. Electrical desalting of crude oil removes the __________ impurities.
Options- A. oleophilic
- B. oleophobic
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
- 3. Glycol added to petrol acts as a/an __________ agent.
Options- A. anti-knocking
- B. anti-icing
- C. anti-gum forming
- D. dewaxing Discuss
- 4. Name the hydrocarbon having the poorest oxidation stability.
Options- A. naphthene
- B. olefin
- C. paraffin
- D. aromatics Discuss
- 5. Mercaptans is represented as (where R and R' are alkyl groups)
Options- A. R-COOH
- B. R-S-H
- C. R-S-R
- D. R-S-R' Discuss
- 6. Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its
Options- A. molecular weight
- B. aromatics content
- C. both a & b
- D. neither a nor b Discuss
- 7. An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating.
Options- A. 5
- B. 15
- C. 40
- D. 60 Discuss
- 8. Octane number of gasoline produced by two stage fluidised catalytic cracking process is
Options- A. 80
- B. 87
- C. 92
- D. 97 Discuss
- 9. Gum formation in stored gasoline is mainly due to the
Options- A. alkylation of unsaturates.
- B. presence of sulphur.
- C. oxidation & polymerisation of unsaturates.
- D. higher aromatic content. Discuss
- 10. Which of the following is desirable in diesel and kerosene but is undersirable in gasoline?
Options- A. Aromatics
- B. Mercaptans
- C. Paraffins
- D. Naphthenic acid Discuss
Petroleum Refinery Engineering problems
Search Results
Correct Answer: both(b)&(c)
Correct Answer: oleophobic
Correct Answer: anti-icing
Correct Answer: aromatics
Correct Answer: R-S-H
Correct Answer: both a & b
Correct Answer: 40
Correct Answer: 97
Correct Answer: presence of sulphur.
Correct Answer: Paraffins
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